He ___________busy yesterday, or he __________you with your experiment.
| A．was; had helped | B．was; would have helped |
| C．had been; would have helped | D．were; would have helped |
— Are you satisfied with her work, sir?
— Not at all. It couldn’t be any .
| A．better | B．best | C．worse | D．worst |
The passenger was very impolite to the conductor, , of course, made things even
worse.
| A．who | B．whom | C．which | D．what |
— Where will you start your work after graduation?
— Mmm, it’s not been decided yet. I continue my study for a higher degree.
| A．need | B．must | C．would | D．may |
surprised me most was that they had finished the talk so quickly.
| A．Which | B．Why | C．That | D．What |
private cars are bringing us convenience, they may also cause more traffic accidents
and pollution.
| A．While | B．As | C．If | D．Since |